Part number lookup
3D78AE-3B Replacement Parts
Cross-reference and compare 8 replacement listings for OEM / aftermarket part number 3D78AE-3B. Use this part-number page — not a generic equipment or brand hub — to review price, availability, and fitment before ordering.
8 Matching Products
Komatsu3 Pcs Fuel Injector YM719810-53100 for Komatsu Engine 3D75-2D 3D75N-1YC 3D78-1E 3D78AE-3D Excavator PC20R-8$211.00
KomatsuAir Heater 129120-77501 for Komatsu Engine 3D75 3D78 3D84 3D88E 4D84 4D88E$190.00KomatsuAir Heater 129120-77501 for Komatsu Engine 3D75 3D78 3D84 3D88E 4D84 4D88E$282.75
YanmarConnecting Rod 719810-23100 for Yanmar 3TNE78 3TNE78A Engine$155.61
YanmarCrankshaft 119813-21000 for Yanmar 3TNE78A Engine$973.16
KomatsuCylinder Head Gasket YM119818-01330 for Komatsu Engine 3D78AE-3 Excavator PC20R-8 PC27R-8$96.79
KomatsuFuel Filter Assembly YM119833-55621 YM119833-55620 for Komatsu Engine 3D78AE-3A 3D82AE-3C 3D82E-3B Excavator PC10-7 PC30FR-1 PC30FR-2$47.00
YanmarFull Overhaul Gasket Kit 719822-92620 for Yanmar 3TN78L 3TN78 3TNE78 Komatsu 3D78-1 3D78 Engine Kobelco Takeuchi Mini Excavator Wheel Loader$139.79Part Numbers and Cross References
YM719810-531003D75N-1YC3D75-2C3D75N-2E3D78-1E3D78AE-3A3D78AE-3B3D78AE-3CWYYM719810-53100129120-77501YM129120-775013D75-2D3D78-1C3D78-1D3D78-1F3D78AE-3D719810-23100YM719810-23100YMR000995YM719810-23700719810-237003TNE783TNE78A01661-UP00715-UPYM119813-21000119813-210003TNE78AKomatsu00101-UP02552-UP3D82AE-3C01208-UPYM119818-01330PC20R-8PC27R-8WYYM119818-01330YM119833-55621RYM11983355620YM119833-556203D82AE-3D3D82AE-3G3D82E-3APC30FR-1PC30FR-2WYYM119833-55621719822-926203TN783D78-13TN78L-RB
Applications and Fitment Summary
- Part Number
- Yanmar · s: Engine: Yanmar 3TNE78A Komatsu Model: 3D78AE-3A S/N 00715-UP 3D78AE-3B S/N 00101-UP 3D78AE-3C S/N 00101-UP 3D78AE-3D S/N 02552-UP 3D82AE-3C S/N 01208-UP 3D82AE-3D S/N 00101-UP 3D82AE-3E S/N 04840-UP 3D82AE-3F S/N 04840-UP 3D82AE-3G S/N 04840-UP 3D82AE-3H S/N 04840-UP 3D82AE-3HB S/N 04840-UP 3D82AE-3HC S/N 04840-UP 3D82E-3A S/N 00101-UP 3D82E-3B S/N 00101-UP PC20R-8 S/N F30001-Up PC20R-8 S/N F30791-Up PC27R-8 DELUXE S/N F30671-Up PC27R-8 DELUXE S/N F31103-Up PC27R-8 S/N F30001-Up PC27R-8 S/N F31103-Up
- Komatsu · s: Komatsu Excavator: PC20R-8, PC27R-8
- Yanmar · Yanmar Engine Gasket Piston Bearing Set This Item Included: - 1set Full gasekt kit - 3pcs Liner Cylinder/Sleeve - 3pcs Piston,STD size - 3pcs Piston Pin - 3set Ring set for 3pistons.STD size - 6pcs Pin Clips - 6pcs Valves 3pcs Intake Valves + 3pcs Exhaust Valves - 6pcs Valve Guides - 6pcs Valves Seats ( 3pcs Intake Valves Seats+ 3pcs Exhaust Valves Seats) - 1set Crankshaft bearing STD size - 1set Connect Rod Bearing STD size - 1Set Crankshaft Thrust washer
- Yanmar · s: For Yanmar engine John Deere JD25 Excavator Item Included : - 1set Full gasekt kit - 3pcs Liner Cylinder/Sleeve - 3pcs Piston,STD size - 3pcs Piston Pin - 3set Ring set for 3pistons.STD size - 6pcs Pin Clips - 6pcs Valves 3pcs Intake Valves + 3pcs Exhaust Valves - 6pcs Valve Guides - 6pcs Valves Seats ( 3pcs Intake Valves Seats+ 3pcs Exhaust Valves Seats) - 1set Crankshaft bearing STD size - 1set Connect Rod Bearing STD size - 1Set Crankshaft Thrust washer
Frequently Asked Questions
What parts replace OEM number 3D78AE-3B?
This page lists 8 replacement listings indexed under 3D78AE-3B. Compare cross references, applications, and pricing before ordering.
How do I confirm fitment for 3D78AE-3B?
Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.
Can I request a quote if 3D78AE-3B is not an exact match?
Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.